I'm Using Jquery DataTable and I'm working on RTL Version, every thing is OK but when I want to export on PDF every Arabic Letters change to [], Please help me..

 $("#table_id").DataTable({
     dom: "Bfrtip",
     buttons: ["excel", "pdf", "print"],
     searching: false,
     paging: false,
 });

it works for export to excel and print but the issue is only in PDF.